console.time emulation for appcelerator titanium apps

appcelerator_performance_timer.js

var timers = {};
Ti.App.time = function(key) {
  console.error('timer started:', key);
  if (timers[key]) {
    Ti.App.timeEnd(key);
  }
  timers[key] = new Date().getTime();
};
Ti.App.timeEnd = function(key) {
  if (!timers[key]) {
    return;
  }
  console.error(key + ':', (new Date().getTime() - timers[key]) + 'ms');
  delete timers[key];
};